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The Importance of Mineral-Free Water in the Plating Industry A. E. Chester Director of Research Promat Division, Poor & Company Waukegan, Illinois In an early German text on electroplating, first published about the time of our Civil War, the author comments on the necessity of pure water for the successful deposition of metals as follows: With the exception of the baths prepared with glycerin according to the patent of Marino, water is the solvent used in the preparation of all baths, and its constitution is by no means of such slight importance as is frequently supposed. This was certainly forward thinking and a surprisingly astute piece of information for the troubled electroplater of that period. However, the same author in the same text, describing the ideal layout of the plating establishment, argues himself into a contradictory position, to say the least, regarding the requisite purity of the water supply. He says: Without water, the electrodeposition of metals is impossible; the success of the process depending in the first place on the careful cleansing of the metallic articles to be electroplated, and for that purpose water, nay, much water, hot and cold, is required. . . . Large establishments should, therefore, be provided with pipes for the admission and discharge of water, one conduit terminating as a rose over the table where the articles are freed from grease. In smaller establishments, where the introduction of a system of water pipes would be too expensive, provision must be made for the frequent renewal of the cleansing water in the various vats. Obviously, the bucket brigade was not an American invention. Strangely enough the same contradictory position regarding the necessity of mineral-free water or, let us say, impurity-free water, for electroplating usage that prevailed in Europe in the early phases of the art has prevailed for years between the practicing plater and the technologist in the United States. No electrochemist is willing to speak with final authority about the effect of impurities in an electroplating solution— and most certainly the production plater is only too willing to completely ignore the whole matter. The situation is best summed up by the report of Dr. Dwight T. Ewing, project director of the A.E.S. Research Project No. 5, titled 171
Object Description
Purdue Identification Number | ETRIWC194720 |
Title | Importance of mineral-free water in the plating industry |
Author | Chester, A. E. |
Date of Original | 1947 |
Conference Title | Proceedings of the third Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/cdm4/document.php?CISOROOT=/engext&CISOPTR=1709&REC=8 |
Extent of Original | p. 171-178 |
Collection Title | Engineering Technical Reports Collection, Purdue University |
Repository | Purdue University Libraries |
Rights Statement | Digital object copyright Purdue University. All rights reserved. |
Language | eng |
Type (DCMI) | text |
Format | JP2 |
Date Digitized | 2009-06-08 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page171 |
Collection Title | Engineering Technical Reports Collection, Purdue University |
Repository | Purdue University Libraries |
Rights Statement | Digital object copyright Purdue University. All rights reserved. |
Language | eng |
Type (DCMI) | text |
Format | JP2 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Transcript | The Importance of Mineral-Free Water in the Plating Industry A. E. Chester Director of Research Promat Division, Poor & Company Waukegan, Illinois In an early German text on electroplating, first published about the time of our Civil War, the author comments on the necessity of pure water for the successful deposition of metals as follows: With the exception of the baths prepared with glycerin according to the patent of Marino, water is the solvent used in the preparation of all baths, and its constitution is by no means of such slight importance as is frequently supposed. This was certainly forward thinking and a surprisingly astute piece of information for the troubled electroplater of that period. However, the same author in the same text, describing the ideal layout of the plating establishment, argues himself into a contradictory position, to say the least, regarding the requisite purity of the water supply. He says: Without water, the electrodeposition of metals is impossible; the success of the process depending in the first place on the careful cleansing of the metallic articles to be electroplated, and for that purpose water, nay, much water, hot and cold, is required. . . . Large establishments should, therefore, be provided with pipes for the admission and discharge of water, one conduit terminating as a rose over the table where the articles are freed from grease. In smaller establishments, where the introduction of a system of water pipes would be too expensive, provision must be made for the frequent renewal of the cleansing water in the various vats. Obviously, the bucket brigade was not an American invention. Strangely enough the same contradictory position regarding the necessity of mineral-free water or, let us say, impurity-free water, for electroplating usage that prevailed in Europe in the early phases of the art has prevailed for years between the practicing plater and the technologist in the United States. No electrochemist is willing to speak with final authority about the effect of impurities in an electroplating solution— and most certainly the production plater is only too willing to completely ignore the whole matter. The situation is best summed up by the report of Dr. Dwight T. Ewing, project director of the A.E.S. Research Project No. 5, titled 171 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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